GM 3919840 Block Cylinder Heads Big Port E-20-8

( Brand: Gm ), ( Manufacturer Part Number: 3919840 ), ( Part Type: Block Cylinder Head )

Review GM Block Cylinder Heads Rectangular Big Port 20-8 fits 396 427

The 3919840 396 block GM cylinder heads, specifically designed for 427 big port engines, are an essential upgrade for any enthusiast seeking to enhance their vehicle's performance. These high-quality cylinder heads are engineered to provide improved airflow and combustion efficiency, resulting in increased horsepower and torque.

The 20-8 and E-20-8 variants of this cylinder head are equipped with large intake and exhaust ports, which allow for a more efficient intake and exhaust of fuel-air mixtures. This design reduces turbulence and promotes a smoother combustion process, resulting in a more powerful engine.

The cylinder heads are also constructed with heavy-duty materials, such as cast aluminum alloy, to ensure durability and longevity. The cylinder bores are precision-machined to ensure a perfect seal with the engine block, reducing the risk of leaks and ensuring optimal engine performance.

Furthermore, these cylinder heads feature fully-adjustable valve springs, allowing for easy tuning to achieve optimal engine performance. The valve guides and seats are made from high-quality materials to minimize wear and tear, ensuring that the cylinder heads last for many miles.

In addition, these cylinder heads are compatible with various aftermarket intake and exhaust systems, providing additional options for customization and performance enhancement.

Overall, the 3919840 396 block GM cylinder heads are a great investment for anyone looking to upgrade their 427 big port engine. With their large intake and exhaust ports, durable construction, and adjustable valve springs, these cylinder heads offer improved engine performance, longevity, and customization options.

1. High-quality materials: These cylinder heads are made from high-grade aluminum alloy, ensuring durability and longevity.

2. Improved performance: The 20-8 e-20-8 design is known for its increased flow rates, which can lead to better engine performance and power output.

3. Compatibility: These cylinder heads are specifically designed for the 396 block GM engine and the 427 big port, ensuring a perfect fit and minimal modifications necessary.

1. Cost: Replacing cylinder heads can be an expensive endeavor, and these high-performance units are no exception.

2. Installation complexity: While they fit perfectly, the installation process may require specialized tools and skills, which can add to the overall cost and time investment.

3. Potential for engine misfires: Improper installation or timing can lead to engine misfires, which can be a costly and time-consuming problem to diagnose and fix.

If you're looking to improve the performance of your 427 big port engine and are willing to invest in high-quality components, the 3919840 396 block GM cylinder heads could be a great option. However, it's essential to consider the potential costs associated with installation and the increased complexity of working with high-performance parts. If you have the necessary skills, tools, and budget, these cylinder heads can deliver improved engine performance and longevity.

Before making a purchase, I recommend thoroughly researching the installation process and taking into account the additional costs associated with the installation. If you're unsure about your ability to perform the installation yourself, consider hiring a professional mechanic to ensure the job is done correctly and safely. Ultimately, the decision to purchase these cylinder heads should be based on your specific needs, budget, and technical skills.

Details:

Gm big block cylinder heads closed chamber, rectangular port hi pref Gm4t date code e 20 8 comes with exhaust manifolds, distributor, and intake manifold Scott.

part #: 3919840 prices

• $999.00-$1499.99

specifications cylinderheapar:

• for models: 396, 427
• brand: Gm
• mpn: 3919840
• part type: Block Cylinder Head

Returns cylinderheapar:

• policy: no returns

Ratings:

1. exellent service, superfast shipping 11-29-15
2. Just what I wanted. 10-14-15
3. Awesome buyer! I hope you enjoy! 10-04-15
4. Thank you for an easy, pleasant transaction. Excellent buyer. A++++++. 11-20-15
5. Great Buyer! Shipped with Stamps 10-27-15

Seller cylinderheapar:

• zipcode: 06614
• city: Stratford, Connecticut

Payments cylinderheapar:

• PayPal

Shipping cylinderheapar:

• type: NotSpecified

Offer cylinderheapar:

• quantity: 1
• # bids: 0
• best offer: false
• Started: December 5, 2015, 7:03 pm
• # Sold: 0

General cylinderheapar:

• Motors > Parts & Accessories > Car & Truck Parts > Engines & Components > Cylinder Heads & Parts
• in stock: Yes
• condition: For parts or not working

Gm 3919840 Is Similar To:

• 10051129 Gm Bbc Aluminum Big (29.5% similar) ...(March 14th, 2017)
• 10101140 Gm Chevy Pair Of Matching Numbers Cylinder Heads Oval Ports (48.9% similar) For sale is this pair of Gm matching numbers cylinder heads. Oval ports, some surface rust Gm 1 will work on Chevy motors...(November 29th, 2018)
• 10149600 General Motors Nos Gm Chevrolet Gmc Truck Suv Diesel Cylinder (29.2% similar) 2j diesel V81990 1991 Chevrolet blazer and GMC jimmy model's with nos stripes, decals, electrical and mechanical parts important. This means if the item is lost or damaged while in transit there no coverage. I do guarantee them to be nos or as otherwise described in my offer. This is a new old ...(February 14th, 2019)
• 350 V8 Mercruiser 10239906 5.7 Cylinder Vortec Gm Head Omc (43.2% similar) Vortex 7 v8 used cylinder head good working condition...(March 31st, 2015)
• 11569648 Gm Cylinder Head Bolt Lot Of Chevy Buick Olds Pontiac (40.3% similar) God bless the USA and her troops. Sales and shipping within the USA only. The winning bidder will receive all 10 pieces. They're nos in the original packaging. I do not know any of the exact applications. Please visit my other offer offerings for more quality stuff. Offered is a believed to fit some...(January 2nd, 2019)
• 1193743 Buick Skylark Special Nos Gm Alum Cylinder Head (36.1% similar) Buick skylark and special nos Gm 215 v8 alum cylinder head. Sorry-no valves or springs. Nice shape casting in Gm box. Fossick automotive products inc. Warning: cancer and reproductive harm...(March 15th, 2019)
• Head Lot 4 Oem Nos Bolts Cylinder 12338010 Gm (26.8% similar) Out of a local estate...(March 26th, 2015)
• 1240149 Gm Buick 455 Heads (40.9% similar) This is the year for ultimate iron 455 beast. Casting from Buick 455 heads with APR studs installed. Hardened intake seats and new springs...(June 3rd, 2017)
• 12495499 Gm Performance Small Block Chevy Cylinder Head Bolt Kit (45.8% similar) For use with iron or aluminum heads. I have 2 sets to sell and only 1 box so somebody will get 1 set without box. Gm performance small block Chevy cylinder head bolt kit new ABC hex head bolts with thread sealer...(December 22nd, 2015)
• 12552362 Acdelco Chevy Silverado Cylinder Head Gasket Gm Original 808709361817 (26.2% similar) Specifications: minimum order quantity: 1 material: graphite steel color: black configuration: one piece thickness in. Gm original equipment trade regular graphite steel cylinder head gasket by AcDelco. Designed utilizing the latest technology, this product by AcDelco features premium quality and ...(May 8th, 2018)
• Vortec Big 7400 1998 12560241 Cylinder Gm Port Block Head Chevrolet Oval (30.2% similar) Free shipping if this item offers free shipping free shipping for all 50 USA. 720 valves specifications manufacturer Chevrolet Gm part also known as condition this unit is used but in good working condition. Higher shipping and handling cost prevail...(April 20th, 2015)